26
– S1 Auxiliary switch on operating mechanism
– S2 Auxiliary switch on blocking magnet
– S3 Auxiliary switch on the breaker shaft
– S4 Auxiliary switch on the breaker shaft
– S5 Auxiliary switch on the breaker shaft
– S7 Auxiliary switch for fault annunciation
(fleeting contact, time ≥ 30 ms)
Figure 7/5 : Wiring diagram
Arrangement for DC 24, 48, 60, 110, 125, 220, 240 V; AC 110, 220, 240 V
– Y1 Blocking magnet
– Y2 Shunt release OFF
– Y3 Shunt release ON
– Y4 Undervoltage release
– Y7 Indirect overcurrent release
– Y9 Second shunt release OFF
– V1 Series rectifier for – Y1
– V2 Series rectifier for – Y2
Shown with the spring energy store in the discharged state.
The wiring diagram comprises the basic components and
all further equipment options for the various VD4 types. The
scope of equipment possible within an individual type series
is listed in the relevant switchgear list, and the equipment
fitted in each individual case can be found in the order
documentation.
Special arrangement for: – S5:
Type 19 Type 20 Type 22 Type 23 Type 24
ON
OFF
1)
Only when Y1 not fitted
2)
External operation
– V3 Series rectifier for – Y3 and – K0
– V4 Series rectifier for – Y4
– V9 Series rectifier for – Y9
– M0 Charging motor for spring
energy store
– K0 Anti-pumping relay
– R0 Series resistor
Type 21
Standard
arrangement
Note:
Shunt releases and blocking magnets are fundamentally
wired with rectifiers (e.g. magnet holder 45 with integrated
rectifiers -V1, -V2, -V3 and -V9).
Rectifiers function as free-wheeling diodes if d.c.-supply.
See page 27 for comparison of VDE/IEC designations.
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